docs: def package_locations(self, package_keyname):
          """List datacenter locations for a package keyname
  
          :param str package_keyname: The package for which to get the items.
          :returns: List of locations a package is orderable in
          """
          mask = "mask[description, keyname, locations]"
  
          package = self.get_package_by_key(package_keyname, mask='id')
  
          regions = self.package_svc.getRegions(id=package['id'], mask=mask)
          return regions